Effective　seismic　measures　for　pipeline　joints　are　the　key　to　optimizing　the　seismic　performance　and　post-earthquake　functional　recovery　capability　of　urban　water　supply　pipeline　networks.　In　this　paper,　a　new　type　of　self-anchored　anti-seismic　joint　for　ductile　iron　pipes　is　proposed　based　on　the　thoughts　of　mechanical　self-anchoring　design　and　self-deformation　compensation.　This　article　conducted　axial　tensile　quasi-static　tests　and　refined　three-dimensional　finite　element　numerical　simulations　of　anti-seismic　joint,　and　studied　the　mechanical　characteristics　of　the　anti-seismic　joint,　including　tensile　bearing　capacity,　initial　tensile　stiffness,　deformation　resistance,　and　ultimate　damage　state.　The　research　results　show　that　the　water　pressure　variation　within　0.　2　MPa　has　little　effect　on　the　axial　mechanical　properties　and　damage　mode　of　the　common　push-on　joint,　and　the　transition　deformation　from　the　initial　leakage　to　the　functional　failure　state　of　the　joint　is　about　2.　5　mm;　the　new　self-anchored　anti-seismic　joint　has　good　tensile　bearing　capacity　and　resistance　to　large　deformation,　and　its　tension　resistance　curve　is　divided　into　three　stages:　the　gasket　bearing　stage,　the　snap　ring　bearing　stage　and　failure　damage.　When　the　deformation　of　the　snap　ring　is　about　9　mm,　it　reaches　a　peak　bearing　capacity　of　about　330　kN.　©　2024　Harbin　Institute　of　Technology.　All　rights　reserved.